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UPSC Geography 10 - Megarelief of First Order (Continents, Continental shelf & Oceans)

This Post and the attached video will explain the following points of Micro-Notes on UPSC Geography 10 - Megarelief of First Order (Continents, Continental shelf & Oceans). Copy & Note it down carefully, as it will be very useful in Fast Revision of the entire topic of "UPSC Geography 10 - Megarelief of First Order (Continents, Continental shelf & Oceans)".


UPSC Geography 10 - Megarelief of First Order (Continents, Continental shelf & Oceans)


Continents

  • 7 continents
  • Straits
  • Isthmus


Continental Shelf
  • Largest- Arctic
  • Raja Rampat (indonesia)- Highest Biodiversity
  • Belize reef- West indies
  • Pulley Reef- Florida
  • Great Barrier reef- N.E Australia
  • Atoll (Horseshoe Coral)

Oceans
  • Indian Ocean - Half n Ocean
  • Southern Ocean - 2000
  • Ocean Daily temperature -1 deg C
  • Annual difference - -12 deg C
  • 0.5 deg C / latitude
  • Photic, Thermocline, Deep Zone (200 m)
  • Salinity 3.3-3.5% Directly Proportional to dept, density & pressure)

Ocean Currents
  • Surface current (Pyrocline by wind)-balanced by Ekman layer- coriolis force
  • Equatorial counter current (east)
  • North & South Equatorial Current west
  • Canary - near morocco
  • labrador - cold
  • Falkland- argentina - cold
  • Oyashio- japan - similar to labrador
  • Cold (NE to SW)
  • Warm (SE to NW)

Sediments at the Sea Bottom
  • Ooze (tests-protozoans)-30 percent is composed of the skeletal remains of microscopic floating organisms
  • Diatoms-type of algae that are typically abundant in marine collected in the Atlantic sector of the Southern Ocean
  • Diatomaceous or diatomite  earth (Photosynthesis)
  • Nodules (Magnesium-Phosphate- sulphide)








** Above Video is created by KapsOne Studies and Placement Center, Nagpur for Guidance of UPSC Civil Service (IAS /IPS / IFS / IRS / SSC / Railways / NDA), MPSC Rajyaseva, UPPSC, MPPSC, BPSC, RPSC, NCERT Aspirants on UPSC Geography 10 - Megarelief of First Order (Continents, Continental shelf & Oceans).
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